Stabil or Seafoam for long term gas can storage?

I keep 20 gallons of gas on hand for my generator. Every month I dump 10 gallons of that stored gas into my truck and refill the cans with fresh fuel. My gas sits no more than 2 months in the cans. I don't use any stabilizer. I always use gas without ethanol. Simple solution, just takes some planning. IN the summer, the gas may go into the boat, motorcycle, atv or truck.